61280983 has 4 divisors (see below), whose sum is σ = 61876048. Its totient is φ = 60685920.

The previous prime is 61280981. The next prime is 61281001. The reversal of 61280983 is 38908216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61280983 - 2¹ = 61280981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61280981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297378 + ... + 297583.

It is an arithmetic number, because the mean of its divisors is an integer number (15469012).

Almost surely, 2^61280983 is an apocalyptic number.

61280983 is a deficient number, since it is larger than the sum of its proper divisors (595065).

61280983 is a wasteful number, since it uses less digits than its factorization.

61280983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595064.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 61280983 is about 7828.2171022526. The cubic root of 61280983 is about 394.2532127381.

The spelling of 61280983 in words is "sixty-one million, two hundred eighty thousand, nine hundred eighty-three".